programmatic

programmatic

A simple GraphQL program where the schema is defined programmatically in Java code.

Instructions

Follow these instructions to build and run the app:

1. Pre-requisite: Java 21
2. Build the app:

   • ./gradlew installDist

3. Build and run the app:

   • build/install/programmatic/bin/programmatic ' 
     {
       localTime(timezone: AMERICA_CHICAGO)
     }'

   • You should notice that the local time in Chicago was printed to the terminal.
4. Alias the build and run commands for happier development:

   • alias go="./gradlew installDist && build/install/programmatic/bin/programmatic"

   • For example, try the following command to build and run the program in one short step.

   • go ' 
     {
       localTime(timezone: AMERICA_CHICAGO)
     }'

   • Next, try a different timezone.

   • go '
     {
       localTime(timezone: EUROPE_PARIS)
     }'

TODO

• DONE Create a data fetcher that gets the local time of the request time zone. Support a few time zones.
• DONE Replace the SDL schema file with a programmatic definition.
• DONE Is it possible to list all known IANA timezones in Java? If so, then do that and then programmaticaly define the GraphQL TimeZone enum.